EP4065811B1 - Outil amélioré pour remédier à une circulation de perte pendant un forage - Google Patents

Outil amélioré pour remédier à une circulation de perte pendant un forage Download PDF

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Publication number
EP4065811B1
EP4065811B1 EP20829038.7A EP20829038A EP4065811B1 EP 4065811 B1 EP4065811 B1 EP 4065811B1 EP 20829038 A EP20829038 A EP 20829038A EP 4065811 B1 EP4065811 B1 EP 4065811B1
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EP
European Patent Office
Prior art keywords
channel
tool
tank
outlet
inlet
Prior art date
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Application number
EP20829038.7A
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German (de)
English (en)
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EP4065811C0 (fr
EP4065811A1 (fr
Inventor
Jafar ABDOLLAHI
Inge Manfred Carlsen
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Topi AS
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Topi AS
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Publication of EP4065811C0 publication Critical patent/EP4065811C0/fr
Publication of EP4065811B1 publication Critical patent/EP4065811B1/fr
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
    • E21B21/003—Means for stopping loss of drilling fluid
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
    • E21B21/10—Valve arrangements in drilling-fluid circulation systems
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
    • E21B21/10—Valve arrangements in drilling-fluid circulation systems
    • E21B21/103—Down-hole by-pass valve arrangements, i.e. between the inside of the drill string and the annulus
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B27/00—Containers for collecting or depositing substances in boreholes or wells, e.g. bailers, baskets or buckets for collecting mud or sand; Drill bits with means for collecting substances, e.g. valve drill bits
    • E21B27/02—Dump bailers, i.e. containers for depositing substances, e.g. cement or acids
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/10—Sealing or packing boreholes or wells in the borehole
    • E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
    • E21B33/138—Plastering the borehole wall; Injecting into the formation
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B34/00—Valve arrangements for boreholes or wells
    • E21B34/06—Valve arrangements for boreholes or wells in wells
    • E21B34/063—Valve or closure with destructible element, e.g. frangible disc
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B34/00—Valve arrangements for boreholes or wells
    • E21B34/06—Valve arrangements for boreholes or wells in wells
    • E21B34/14—Valve arrangements for boreholes or wells in wells operated by movement of tools, e.g. sleeve valves operated by pistons or wire line tools
    • E21B34/142—Valve arrangements for boreholes or wells in wells operated by movement of tools, e.g. sleeve valves operated by pistons or wire line tools unsupported or free-falling elements, e.g. balls, plugs, darts or pistons
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B47/00—Survey of boreholes or wells
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B2200/00—Special features related to earth drilling for obtaining oil, gas or water
    • E21B2200/06—Sleeve valves
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B47/00—Survey of boreholes or wells
    • E21B47/12—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling

Definitions

  • the present invention relates to a downhole lost circulation while drilling remedial tool. More specifically, it relates to a tool arranged for detecting an undesired mud loss state, and, if such mud loss state is determined, to release from a drill string conveyed tank above the bottomhole assembly, a fluid which starts reacting with ambient water such as water from the drilling mud or the formation, and when entering cracks and fissures causing the mud loss, the reacting fluid will continue to react with water and expand to form a gel-like substance which blocks the cracks and fissures.
  • Another problem is to introduce a remedial fluid such as cement or swelling material from the surface, which is known practice, because it is difficult to control in advance the time the remedial fluid shall use to set and cure.
  • the amount of pumped remedial fluid may be tens of cubic metres.
  • the main purpose of the invention is, during drilling, to detect an undesired mud loss state and release a swellable sealant agent from a downhole tank to near the drilling bit and let it mix with water and cure the fracture causing the undesired mud loss.
  • the mud loss state is detected downhole and action is automatically taken.
  • Norwegian patent application NO20180753 discloses a device and a method for releasing a swellable agent from a drill pipe string conveyed annular tank near the drill bit in order to remedy loss of circulation. Further background art is mentioned in US3255833A , US2007/0246225A1 and EP1653942A1
  • the invention discloses a mud loss treatment drilling tool (1), please see Figs. 1 and 10 , 11 ,
  • the purpose of the invention is that when an undesired mud loss is detected, either automatically or by the driller's observation of the drilling process, for flushing all or part of said swellable sealant agent (5) into said through channel (101), so as for a mixture (5, w) of said swellable agent (5) and said water (w) to start reacting to swell during the time it takes the mixture (5, w) to reach a fracture (f) extending from a well under drilling by said BHA, so as for continuing to swell and block said fracture (f) to stop said undesired mud loss.
  • the proportion is between 1:100 and 1:30, more preferably about 1:60.
  • the sealing agent (5) may be dry, such as powder or small dried flakes or granulate or even extrusion rods, or wet, or wet, in a non-reacting fluid.
  • the "tank" (10) may in an embodiment be a container (10) for push-out extrusion rods of solid swelling agent (5), not fluids. Equivalently, oppositely, the swellable sealant agent (5) arranged for mixing with oil (o) to swell; that would be the same, and is easily developed from this invention.
  • the tool (1) further comprises an inlet (123) from said through channel (101), preferably arranged above said outlet (120) as counted along the tool axis, please see Fig 2 or Fig. 10 and 11 .
  • the tool's (1) inlet (123) is arranged in an upper, inlet flow diverter sub (4) arranged on top of at least one of said tanks (10), and said inlet flow diverter sub (4) communicating from said through channel (101) via said inlet (123) to said tank (10).
  • This provides displacement mud from the main bore (101) into the tank to displace the swelling agent (5) out of the opposite end through outlet (120).
  • Having the inlet (120) arranged in a separate inlet flow diverter sub (4) makes it easier to assemble the tool (1) form a sub (4) component and one or more dual concentric pipes, and optionally a lower outlet flow diverter sub (6) forming together the tank (10) with a central bore/ channel (101).
  • the tool (1) has a valve (12) (one or more) for opening the inlet (123) and / or sealing off said through channel (101) above said [lower] outlet (120), please see Fig. 2 , 3 , 4 , (the ball and seat and the burst disc constitute a valve).
  • the inlet (123) may be opened by the same valve (12) if the valve is a ball valve (125) which is arranged at the inlet (123), and redirects the flow, or the valve (12) is arranged below the inlet (123) and the inlet (123) may be opened by an inlet rupture disc (129i) in the inlet (123), after e.g. releasing and circulating in a dart or ball to increase the pressure to open the valve.
  • the tool (1) further comprises said valve (12) being arranged at or below said inlet (123), preferably the inlet (123) is in the upper flow diverter sub (4), for closing said through bore (101) and opening the inlet (123) to the tank (10).
  • said valve (12) comprises an obturator seat (126S), see Fig. 4 , such as a ball seat or dart seat arranged in said through channel (101) below said inlet (123), and
  • the tool (1) wherein said inlet (123) it comprises an inlet rupture disc (129i) for sealing off said inlet (123) until a predefined differential pressure across said inlet rupture disc (129i) is exceeded.
  • the tool of the invention may comprise that said outlet (120) is arranged in an outlet flow diverter sub (6) arranged at a lower end of said tank (10), said flow diverter sub (6) communicating between said tank (10) via said outlet (120) to said through channel (101).
  • the tool (1) 's outlet (120) comprises an outlet rupture disc (129o) for sealing off said outlet (120) until a predefined differential pressure across the outlet rupture disc (129o) is exceeded.
  • the tool (1) comprises that said obuturator seat (1265) is part of a sliding sleeve valve (127) arranged in said through channel (101) wherein in a first position (P1) seals off said inlet (123) and when said sliding sleeve valve (127) is sled downhole by a force on said obturator seat (1265) into a second position (P2), said sliding sleeve valve (127) opens up said inlet (123).
  • the tool (1) comprises that an outlet obuturator seat (1205) is part of a sliding sleeve valve (1205) arranged in said through channel (101) wherein in a first position (O1) seals off said outlet (120) and when an outlet sliding sleeve valve (120o) is sled downhole by a force on said obturator seat (1205) into a second position (O2), said sliding sleeve valve (120o) opens up said outlet (120).
  • outlet obturator seat (1205) in the lower part of e.g. Fig. 10 is very similar to what is drawn for the "upper" inlet obturator seat (1265) and its sliding valve, and should be used with a smaller diameter ball than the one above, and be actuated first if there are two. They may be operated independently by a small ball first and larger ball subsequently, and even circulated in with short interval.
  • the tool (1) is comprising a ball valve (12, 124) and corresponding seat (preferably shear-out) for sealing off said through bore (101) below said inlet (123) and above said outlet (120), see e.g. Fig. 7 and Fig. 9 .
  • the inlet (123) may be opened by the same valve (12) if the ball valve (125) is arranged at the inlet (123), and redirects the flow into the inlet (123).
  • the tool (1) said through channel (101) being a through main bore (101) for said drilling fluid flow.
  • the through channel (101) has been drawn axially, but this is no limitation and the through channel (101) may be excentrically arranged (or constituted by a partly plate-like separator structure through the tool such as a longitudinal partition wall between a through passage (101) and a tank (10)).
  • said through channel (101) is an axial through main bore (101) such as for dual drilling pipes.
  • the outer wall has the mechanical structure sufficient to be used as drill pipe, the inner pipe shall only withstand the pressure difference between the tank (10) and the central bore (101)
  • valve (12) to said outlet (120) comprises one or more perforation charges (12C) arranged along a radially outer face of said central pipe (101i) and arranged for forming perforation holes (120C) inwardly radially between said tank (10) and said through channel (101).
  • the perforation charges (12C) are ignited by a trigger mechanism (12Ct) which may comprise a ball seat and shear pin sleeve arranged in said central channel (101) and for being triggered by a ball landing and being pressurized in the ball seat., please see Fig. 8 .
  • the valve (12) to said outlet (120) comprises one or more preferably conical slot plugs (12P) made of a weaker material than the pipe wall itself and arranged in corresponding slots (125) along said central pipe (101i) and arranged for forming pressure perforation holes (1205) between said tank (10) and said through channel (101) upon a pressure gradient made across central pipe (101i).
  • the plugs, if entering the through channel (101) may be caught in a ball catcher below.
  • a ball catcher is shown in Fig. 10 schematically.
  • conical plugs some may be arranged for being forced into the tank, and / or arranged for being forced into the central bore (101).
  • a ball seat below at least the upper slot (which may also be an elliptic or circular aperture) so as for creating a pressure differential across the upper slot plugs to break them to pop into the tank, and an opposite pressure differential across the lower slot plugs to make them pop out into the central channel (101).
  • the plugs there will be a number of apertures / slots through which the drilling mud will flush out the swellable material (5) through all the perforation-like slots (125) and mix efficiently into the downward flowing drilling mud and start swelling in the central channel (101).
  • a triggering mechanism constituted by a ball seat () arranged below at least an upper of two or more of said slots (125) with said slot plugs (12P), so as for a ball or dart or part-open dart (12B) to block said ball seat () to increase pressure above said ball (12B).
  • the partly or entirely blocked ball seat will result in an increasing pressure above it, and will trigger the release.
  • the ball seat may be shearable so as to be caught below in a ball seat catcher. All ball catchers in the present invention have a bypass.
  • said tank (10) is annular about said through main bore (101). This is shown in all drawings, and optionally the tank is not annular but constitutes a sector parallel to the through bore which then also becomes a sector passage.
  • the tool (1) has arranged below said lower tooljoint (101L) one or more weight collars (2) with main bore (201) and a drill bit (3) forming part of said BHA assembly (2, 3). There may also be an MWD unit between the tool and the drill bit (3).
  • Drill collars are similar to drill pipe string sections but have a thicker wall in order to provide weight on the bit.
  • the series of weight collars (2) may be about 100 meters all toghether. These are connected in an upper end to the drill pipe string which is suspended in the drill rig, the drilling motor above the drilling deck. Another purpose of the drill collars is to provide rotational inertia directly connected to the drill bit.
  • the tool (1) is arranged near above the neutral point (N) of the drill string, i.e. under drill pipe string axial tension or little axial tension, and above the drill weight collars (2).
  • N neutral point
  • the weight collars will have a large rotational inertia to temporarily meet the increased torsion moment resistance, allowing time for reducing the torque applied and / or weight on bit.
  • the relatively thin-walled tank (10) section would directly meet and transfer the torsion moment resistance at the bit, and the main body (1) would risk torsional deformation and damage.
  • the tool (1) is arranged without drill weight collars (2) below it (such as illustrated in Fig. 1 ). Without drill weight collars the tool (1) may be used during drilling in predominantly horizontal wells or strongly deviated wells, as such weight collars increasingly with the deviation angle would lie on the lower wall of the hole being drilled and contribute progressively more moment resistance due to friction of the weight collar on the lower wall. In such a situation there may be no use of weight collars (2) or weight collars may be arranged in a higher level in a more or less vertical section of the drill pipe string, where thay may provide a forward push on the bit through the drill pipe string below along the below curving and deviating out borehole path.
  • said drill bit (3) has drilling fluid nozzles (301).
  • the swelling of the swelling material (5) absorbing water from the drilling mud while passing from the outlet (120) toward the drill bit should not form so large or solid swollen lumps that they block the drilling fluid nozzles (301) in the bit. This is a task to manage for the chemist manufacturing the swelling agent (5).
  • the said upper flow diverter sub (4) comprises said valve (12) arranged for operating with two flow modes;
  • said tank (10) comprises a pressure equalizer mechanism (9) for equalizing a pressure inside the tank (10) with a pressure in the through main channel (101), e.g. in the form a narrow equalizer channel and / or of an annular piston (121P) arranged between said swelling agent (5) in said tank and said through channel (101).
  • a pressure equalizer mechanism for equalizing a pressure inside the tank (10) with a pressure in the through main channel (101), e.g. in the form a narrow equalizer channel and / or of an annular piston (121P) arranged between said swelling agent (5) in said tank and said through channel (101).
  • said tank (10) comprises an annulus space (10ann) about an inner pipe (10inn) and within a concentric outer pipe (10out) of a so-called “dual pipe” (10D).
  • dual pipe is commercially available.
  • Such dual pipes usually are provided with anchor radial stays to hold the inner pipe centrically within the outer pipe. This means that an annular separator piston in the tank (10) could not pass such radial anchor stays.
  • aid upper diverter sub (4) [with or without an inlet (123)], arranged on top of one or more said dual pipes (10D) further arranged on said lower diverter sub (6) with said outlet (120).
  • aid upper diverter sub (4) [with or without an inlet (123)]
  • said dual pipes (10D) further arranged on said lower diverter sub (6) with said outlet (120).
  • the lower outlet (120) is provided with a lower valve (122). Please see Fig. 10 . (We consider a rupture disc to be a valve which can be opened once.)
  • said lower valve (122) comprises a ball seat sliding sleeve (1225) for an obturator (122B) (ball or dart), please see Fig. 7 .
  • the sliding sleeve comprises shear pins in order to break at a given pressure.
  • the tool is in an embodiment obturator-controlled.
  • the tool (1) is alternatively, or supplementary, further comprising:
  • a slow reacting pressure generating explosive charge in upper part of the tank (10) - release of the swellable sealing agent. is used.
  • a slow combusting or slow reacting gas pressure generating charge (11) is arranged in an end portion of said tank (10) and arranged for breaking a rupture barrier (or move a piston ) to said swellable matter (5) and force said swellable matter towards said outlet (120) which may comprise a rupture disc.
  • said charge (11) is ignited by a trigger mechanism (11Ct) comprising a ball seat and shear pin sleeve arranged in said central channel (101) and for being triggered by a ball landing and being pressurized in the ball seat.
  • a trigger mechanism 11Ct comprising a ball seat and shear pin sleeve arranged in said central channel (101) and for being triggered by a ball landing and being pressurized in the ball seat.

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  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
  • Geophysics (AREA)
  • Earth Drilling (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Drilling Tools (AREA)
  • Bulkheads Adapted To Foundation Construction (AREA)

Claims (20)

  1. Outil de forage de traitement de perte de boue (1) comprenant
    - ledit outil (1) ayant un raccord d'outil supérieur (101U) à une extrémité inférieure d'un train de tiges de forage du dessus (0),
    - un ou plusieurs réservoirs (10) avec un canal traversant (101) pour un flux de fluide de forage,
    - un raccord d'outil inférieur (101L) relié à un ensemble BHA (2, 3) comprenant au moins un trépan de forage (3) ;
    - ledit réservoir (10) agencé pour contenir un agent d'étanchéité gonflable (5) ;
    - ledit agent d'étanchéité gonflable (5) agencé pour se mélanger avec de l'eau (w) afin de gonfler ;
    caractérisé par
    - ledit réservoir (10) muni d'une sortie (120) vers ledit canal traversant (101) pour ledit agent d'étanchéité gonflable (5),
    - une entrée (123) depuis ledit canal traversant (101), disposée au-dessus de ladite sortie (120) telle que considérée le long de l'axe d'outil,
    - ladite entrée (123) étant agencée dans un organe de dérivation de flux d'entrée supérieur (4) agencé au-dessus d'au moins un desdits réservoirs (10), ledit organe de dérivation de flux d'entrée (4) communiquant depuis ledit canal traversant (101) par ladite entrée (123) audit réservoir (10), de manière à, lorsqu'une perte de boue indésirable est détectée, rincer tout ou une partie dudit agent d'étanchéité gonflable (5) dans ledit canal traversant (101), de façon à ce qu'un mélange (5, w) dudit agent gonflable (5) et de ladite eau (w) commence à réagir au gonflement pendant le temps qu'il faut au mélange (5, w) pour atteindre une fracture (f) s'étendant à partir d'un puits en cours de forage au moyen dudit BHA, de manière à continuer à gonfler et à bloquer ladite fracture (f) afin d'arrêter ladite perte de boue indésirable.
  2. Outil (1) selon la revendication 1, comprenant en outre une vanne (12) agencée pour ouvrir l'entrée (123) et / ou fermer de manière étanche ledit canal traversant (101) au-dessus de ladite sortie (120).
  3. Outil (1) selon la revendication 2, dans lequel ladite vanne (12) est agencée au niveau ou en dessous de ladite entrée (123) et agencée pour fermer ledit alésage traversant (101) et ouvrir l'entrée (123) vers le réservoir (10).
  4. Outil (1) selon l'une quelconque des revendications précédentes, dans lequel ladite vanne (12) comprend en outre
    - un siège d'obturateur (126S) tel qu'un siège de bille ou un siège de clapet agencé dans ledit canal traversant (101) en dessous de ladite entrée (123), et
    - un obturateur (126B) tel qu'une bille ou un clapet, pour atterrir et fermer entièrement ou partiellement de manière étanche ledit canal traversant (101).
  5. Outil (1) selon l'une quelconque des revendications précédentes, comprenant en outre un organe de dérivation de flux de sortie (6) dans lequel ladite sortie (120) est agencée, ledit organe de dérivation de flux (6) étant agencé à une extrémité inférieure dudit réservoir (10), ledit organe de dérivation de flux (6) communiquant entre ledit réservoir (10) par ladite sortie (120) et ledit canal traversant (101).
  6. Outil (1) selon l'une quelconque des revendications précédentes, dans lequel ladite sortie (120) comprend en outre un disque de rupture de sortie (129o) pour fermer de manière étanche ladite sortie (120) jusqu'à ce qu'une pression différentielle prédéfinie à travers le disque de rupture de sortie (129o) soit dépassée.
  7. Outil (1) selon l'une quelconque des revendications précédentes 4 à 6, comprenant en outre une vanne à douille coulissante (127) agencée dans ledit canal traversant (101), dans lequel ledit siège d'obturateur (126S) fait partie de ladite vanne à douille coulissante (127) agencée dans ledit canal traversant (101) dans lequel, dans une première position (P1), il ferme de manière étanche ladite entrée (123) et lorsque ladite vanne à douille coulissante (127) est traînée au fond du trou par une force sur ledit siège d'obturateur (126S) dans une seconde position (P2), ladite vanne à douille coulissante (127) ouvre ladite entrée (123).
  8. Outil (1) selon l'une quelconque des revendications précédentes, dans lequel un siège d'obturateur de sortie (120S) fait partie d'une vanne à douille coulissante (120S) agencée dans ledit canal traversant (101) dans lequel, dans une première position (O1), il ferme de manière étanche ladite sortie (120) et lorsque une vanne à douille coulissante de sortie (120o) est traînée au fond du trou par une force sur ledit siège d'obturateur (120S) dans une seconde position (02), ladite vanne à douille coulissante (120o) ouvre ladite sortie (120).
  9. Outil (1) selon l'une quelconque des revendications précédentes, comprenant en outre un robinet à bille (12, 124) pour fermer de manière étanche ledit alésage traversant (101) au-dessous de ladite entrée (123) et au-dessus de ladite sortie (120).
  10. Outil (1) selon l'une quelconque des revendications précédentes, dans lequel ledit canal traversant (101) est un alésage principal traversant (101) pour ledit flux de fluide de forage.
  11. Outil (1) selon l'une quelconque des revendications précédentes, comprenant en outre un tuyau central (101i) dans ledit réservoir (10), ledit tuyau central (101i) formant ledit canal traversant (101).
  12. Outil (1) selon l'une quelconque des revendications précédentes, ledit réservoir (10) étant annulaire autour dudit alésage principal traversant (101).
  13. Outil (1) selon l'une quelconque des revendications précédentes, dans lequel ledit réservoir (10) comprend un mécanisme d'égalisation de pression (9) pour égaliser une pression à l'intérieur du réservoir (10) avec une pression dans le canal principal traversant (101).
  14. Outil (1) selon la revendication 13, dans lequel ledit mécanisme d'égalisation de pression comprend un canal d'égalisation étroit et / ou un piston annulaire (121P) agencé entre ledit agent de gonflement (5) dans ledit réservoir et ledit canal traversant (101).
  15. Outil (1) selon l'une quelconque des revendications précédentes, dans lequel ledit réservoir (10) comprend en outre un espace annulaire (10ann) autour dudit tuyau interne (10inn) et à l'intérieur d'un tuyau externe concentrique (10out) d'un soi-disant « double tuyau » (10D).
  16. Outil (1) selon la revendication 15, dans lequel ledit organe de dérivation supérieur (4) avec ladite entrée (123), est agencé au-dessus d'un ou de plusieurs desdits doubles tuyaux (10D) agencés en outre sur ledit organe de dérivation inférieur (6) avec ladite sortie (120).
  17. Outil selon l'une quelconque des revendications précédentes, comprenant en outre que ladite sortie inférieure (120) est munie d'une vanne inférieure (122).
  18. Outil selon l'une quelconque des revendications précédentes, comprenant en outre :
    - un système de commande de fond (13) avec un algorithme (131) pour déterminer si un état de perte de boue indésirable se produit, et
    - un système capteur (11) fournissant, pendant le forage, une ou plusieurs mesures (m1, m2, ) audit système de commande (13),
    dans lequel ledit système de commande (13) est agencé pour contrôler ladite sortie inférieure (120) pour ouvrir et libérer ledit agent d'étanchéité gonflable (5) dans un puits en cours de forage au moyen dudit ensemble BHA (2, 3), si un état de perte de boue indésirable (5) se produit.
  19. Procédé de durcissement d'une perte de boue dans un puits en cours de forage, comprenant les étapes suivantes consistant à :
    - assembler un outil de forage de traitement de perte de boue (1) selon l'une quelconque des revendications précédentes, caractérisé par les étapes consistant à :
    - assembler ledit raccord d'outil supérieur (101U) approprié pour se relier à une extrémité inférieure d'un train de tiges de forage du dessus (0), ledit raccord d'outil supérieur (101U) comprenant une entrée (123) agencée dans ledit organe de dérivation de flux d'entrée supérieur (4) agencé au-dessus dudit au moins un d'un ou plusieurs réservoirs (10) avec un canal traversant (101), ledit organe de dérivation de flux d'entrée (4) communiquant dudit canal traversant (101) par ladite entrée (123) audit réservoir (10),
    - assembler ledit un ou plusieurs réservoirs (10) avec ledit canal traversant (101) approprié pour transporter un flux de fluide de forage,
    - munir ledit réservoir (10) de ladite sortie (120) vers ledit canal traversant (101),
    - assembler ledit raccord d'outil inférieur (101L) approprié pour être relier à un ensemble BHA (2, 3) comprenant au moins un trépan de forage (3),
    et
    - remplir lesdits un ou plusieurs réservoirs (10) avec ledit agent d'étanchéité gonflable (5) approprié pour être mélangé avec de l'eau (w) pour gonfler,
    - transporter ledit outil de forage de traitement de perte de boue (1) dans le puits sur le train de tiges de forage (0) conjointement avec ledit ensemble BHA (2, 3),
    - surveiller un état de perte de boue indésirable dans le puits pendant le forage,
    - en cas de détection d'un tel état de perte de boue indésirable, libérer l'agent de gonflement (5) du réservoir (10) vers le canal traversant (101) pour le mélanger à l'eau (w) présente dans la boue de forage afin de déclencher le gonflement, et
    - permettre à l'agent de gonflement (5) de sortir par le canal traversant (101) et à travers le trépan de forage (3) et dans des fissures dans la formation entourant le puits pour continuer à gonfler et à durcir ladite perte de boue indésirable.
  20. Procédé selon la revendication 19, comprenant en outre les étapes consistant à :
    - lors de la détection dudit état de perte de boue indésirable, déposer un obturateur,
    - faire atterrir ledit obturateur dans un siège d'obturateur dans le canal traversant (101) de l'outil de forage de traitement de perte de boue (1), bloquant ainsi ledit canal traversant (101), et
    - rediriger le flux de fluide de forage dans ladite entrée pour évacuer ledit agent d'étanchéité gonflable (5) du réservoir (10) et dans l'alésage traversant (101) à travers ladite sortie (120).
EP20829038.7A 2019-11-28 2020-11-30 Outil amélioré pour remédier à une circulation de perte pendant un forage Active EP4065811B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO20191415A NO346299B1 (en) 2019-11-28 2019-11-28 Improved tool for remedial of lost circulation while drilling
PCT/NO2020/050295 WO2021107786A1 (fr) 2019-11-28 2020-11-30 Outil amélioré pour remédier à une circulation de perte pendant un forage

Publications (3)

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EP4065811A1 EP4065811A1 (fr) 2022-10-05
EP4065811C0 EP4065811C0 (fr) 2024-01-03
EP4065811B1 true EP4065811B1 (fr) 2024-01-03

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US (1) US11781386B2 (fr)
EP (1) EP4065811B1 (fr)
CN (1) CN114746620B (fr)
AU (1) AU2020394290A1 (fr)
BR (1) BR112022010298A2 (fr)
CA (1) CA3159427A1 (fr)
GB (1) GB2604780B (fr)
NO (1) NO346299B1 (fr)
WO (1) WO2021107786A1 (fr)

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US20050026957A1 (en) 2003-07-30 2005-02-03 Allergan, Inc. Methods of treating nodulocystic acne
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CN104153738A (zh) 2013-05-14 2014-11-19 四川海沃石油工程技术有限公司 一种运用于钻井工程中的控塞堵漏工具组件及堵漏方法
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Publication number Publication date
CA3159427A1 (fr) 2021-06-03
WO2021107786A1 (fr) 2021-06-03
NO20191415A1 (en) 2021-05-31
NO346299B1 (en) 2022-05-30
EP4065811C0 (fr) 2024-01-03
CN114746620B (zh) 2023-12-05
GB2604780B (en) 2023-09-06
US20230139705A1 (en) 2023-05-04
BR112022010298A2 (pt) 2022-08-09
EP4065811A1 (fr) 2022-10-05
US11781386B2 (en) 2023-10-10
GB2604780A (en) 2022-09-14
AU2020394290A1 (en) 2022-06-16
CN114746620A (zh) 2022-07-12

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